I have a US Optics SN-4 Mk III in excellent condition that I would like to trade for a higher power variable scope. The SN-4 is 1x-4x, illuminated circle/dot recticle and has an older style posi-slide mount. No box or papers. The glass is clean and overall condition is excellent. Looking for 3x-9x minimum. Depending on your scope, cash either way if necessary to make the deal happen. Pictures available.